Heel.



No. 887,593. PATENTED MAY l2, 1908. M. R. GROSSMAN.

HEEL.

APPLIOATION FILED JUNE 6. 1907.

UNITED sTATEs PATENT oTTTcE.

MARTIN R. COSSMAN, OF BQSTON, MASSACHUSETTS.

HEEL.

Application filed J une 6, 1907.

To all whom 'it may concern:

Be it known that I, MARTIN R. CRossMAN, a citizen of the United States, residing at Boston, county of Suffolk, and State of Massachusetts, have invented an Improvement in Heels, of which the following description, in`

connection with the accompanyingdrawing, is a specification, like letters on the drawing representing like parts.

This invention relates to heels for boots and shoes, and its object is to provide a novel form of friction or wear plug for a heel which is adapted for use either with rubber or leather heels.

Some embodiments of the invention will first be described and then the novel features thereof pointed out in the appended claims.

In the drawings, Figure 1 is a bottom View of la rubber heel embodying my invention; Fig. 2 is a section on the line art-o2, Fig. 1; Fig. 3 shows a bottom View of a heel showing another Way of applying my improved Wear or frictionplug thereto; Fig. 4 is a perspective view showing one form of friction plugv embodying my mvention; Fig. 5 1s a similar view showing another embodiment of my invention.

In accordance with my invention I embed lin the heel Whether it be made or rubber or leather one or more friction or wear plugs of novel construction. The friction plug that I useis made with a head and an attaching shank, and in constructing the plug I have made the head or at least that portion thereof Whichforms the friction surface of a good friction material, and I make the shank of the plug of'a shape which will readily interlock with and hold the plug in place, and preferably also of such material that rubber m'fy be vulcanized thereto. g

n the embodiment of thefinvention herein shown the plug comprises a head 3 and the attaching shank 4. The head maybe made of aluminum, thisnnaterial being especially desirable because it is light and because it has good frictional properties."A The shank 4 is preferably made of brass and the end thereof is enlarged or provided with a flange 5. The shank 4 may be secured to the head 3 in any suitable Way, and I have herein shown the' Specicaton of Letters Patent.

Patented May 1'2, 190s.

Serial No. 377,577.

formation of the heel by mold rests or pins which set into the core of thi` shank. When the material of the heel 8 is poured into the 4mold during the'formation of the heel, it

molds itself around the plug as herein shown, leaving the end of the plug exposed at the bottom of the heel. 'lhe shank 4 of the plu .is of a material, such as brass, to which rub er may be vulcanized, and in the process of vulcanizing the heel the rubber becomes firmly attached to the shank 4 thereby firmly securing the plug to the heel. While I prefer to make the shank with the liange 5 so as to more securely retain the plug in place, yet because of the fact that the shank is of brass or, some other material to which rubber may be vulcanized, said shank will be firmly secured to the rubber by the vulcanizing process. This construction of plug provides a desirable friction surface Aat the exposed portion of the plug and also a form of shank which may be firmly secured to a rubber heel.

Any number desired of my im roved friction plugs may be employed in t e heel, and they may be placed in any desired-location. In Fig; 1 I have shown three such lugs `placed at the points were the nail ho es ofy the heel are'formed and Where the plugs are thus placed the usual washer l() Whidh c0- '0 erates with the nail in holdin the heel in p ace ma be placed directly a ove and on the top of the shank 4, the mold rests passing up through each shank and the corresponding washer to hold them in placewhile the heel is being molded. Where this construction is employed the nail 11 which is used to secure the heel to the shoe will be driven throu h the shank 4 until its head contacts with t ie washer l0. In Fig. 3 I have shown one plug only, and this is arranged between the nail holes 12. Where the plug is placed in this position it will be necessary, of course, to employ a specially placed mold rest for maintaining the plug in position during the molding of the heel.

n Fig. 5 I have shown a form of my invention in which the periphery of the head is made of brass, this being done by placing a brass `ring 13 around the aluminum head. Where the periphery of the head is thus made of brass or it may be of some other material to which rubber may be vulcanized.

'that they be lined with brass.

the process of vulcanization of the heel will cause said rubber to be attached both to the shank and to the periphery of the head.

If desired I may provide the head with one or more holes 14, as shown ,in Fig. 5, which extend therethrough and into which rubber is forced during the molding of the heel. Where this construction is employed the mass of rubber which ills the holes 14 acts as additional attaching means for holding the plug to the heel. If desired I may line the holes 14 with brass or some other material to which rubber can be vulcanized, in which case the mass of rubber filling the holes will still more securely hold the plug in place. It is not essential to my invention, however, that the holes 1 4 be provided or y l/Vhere the holes are provided and are thus lined it may not be necessary to use the shank 4, as above referred to. Friction plugs having the same essential features as those above described may also be used in leather heels as well as in rubber heels, although it may bevdesirable to modify the shape of the heel in some minor particulars, if it is used in leather heels. The specific forms of plug herein shown are especially adapted for use in connection with rubber heels. I would also add that my improved plug may be used on soles of shoes as well as `on heels.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is:-

l. A heel having a friction plug embedded therein, which plug has a wearing surface of aluminum and an attaching shank of brass.

2. A friction plug for a shoe presenting an aluminum head provided with a wearing surface-and a brass shank extending from said head.

3. A friction plug for a shoe presenting an aluminum head 3 and a hollow brass shank 4 extending therefrom, the end of the shank opposite the head being enlarged.

4. A friction plug for a shoe presenting a wearing surface of aluminum and liaving`portions thereof formed of a material to which rubber can be vulcanized.

5. A rubber heel having a friction plug embedded therein, said plug presenting an aluminum head and a brass shank, the head having apertures 14 therein adapted to be iilled with rubber and provided 'with an eX- posed frictional surface.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

MARTIN R. CROSSMAN.

Witnesses LOUIS C. SMITH, BERTHA F. HEUSER. 

